Voice coil unit, electro-acoustic transducer, and headphone set

Abstract

A voice coil unit for a dynamic electro-acoustic transducer is disposed in a magnetic circuit, outputs acoustic waves through driving of a diaphragm in response to digital signals, and includes coils that are each composed of a multi-strand wire and receive different digital signals.

What is claimed is: 
     
         1 . A voice coil unit for a dynamic electro-acoustic transducer disposed in a magnetic circuit and outputs acoustic waves through driving of a diaphragm in response to digital signals, the voice coil unit comprising:
 a plurality of coils receiving different digital signals,   each of the coils being composed of a multi-strand wire.   
     
     
         2 . A dynamic electro-acoustic transducer comprising:
 a diaphragm; and   a voice coil unit fixed to the diaphragm,   the voice coil unit comprising the voice coil unit according to  claim 1 .   
     
     
         3 . A headphone set comprising:
 two driver units;   a longitudinally curved headband, the ends of the headband being attached to the driver units; and   the electro-acoustic transducer according to  claim 2  electrically connected to the head phone via a line disposed along the headband and attached to the driver units.